Title :
Laser radiation scattering by the optical breakdown plasma
Author :
Bufetov, I.A. ; Bufetova, G.A. ; Fedorov, V.B.
Author_Institution :
Gen. Phys. Inst., Acad. of Sci., Moscow, Russia
fDate :
6/1/1995 12:00:00 AM
Abstract :
The spatial distribution measurements of laser radiation, scattered in the laser spark, were accomplished for various laser radiation wavelengths (1060, 530, 353, and 265 nm) and various pressures of the gas (air at 10-760 mm Hg). The interference structure of the laser light scattering cone behind the laser spark was observed for the first time. It is proposed to consider the observed structure as a result of interference of the laser radiation, scattered by two or more self-focusing centers in laser spark air plasma. The experimental dependence of the maximal angle of the light scattering on the gas pressure and on the laser radiation wavelength was obtained
Keywords :
electric breakdown; laser beams; laser variables measurement; light interference; light scattering; optical focusing; plasma diagnostics; plasma production by laser; 10 to 760 mmHg; 1060 nm; 265 nm; 353 nm; 530 nm; gas; gas pressure; interference structure; laser light scattering cone; laser radiation interference; laser radiation scattering; laser radiation wavelength; laser radiation wavelengths; laser spark; laser spark air plasma; maximal angle; optical breakdown plasma; pressures; self-focusing centers; spatial distribution measurements; Electric breakdown; Gas lasers; Interference; Light scattering; Mercury (metals); Optical scattering; Plasma measurements; Plasma waves; Sparks; Wavelength measurement;
Journal_Title :
Quantum Electronics, IEEE Journal of
